英语词汇“Keyhole Nebula”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

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单词	Keyhole Nebula
释义	Definition of Keyhole Nebula in English: Keyhole Nebula noun Astronomy (The name of) a small nebula in the southern sky surrounding the variable star η Carinae, with a dark central region shaped like a keyhole. Origin Late 19th century; earliest use found in The Eclectic Magazine. Definition of Keyhole Nebula in US English: Keyhole Nebula noun Astronomy (The name of) a small nebula in the southern sky surrounding the variable star η Carinae, with a dark central region shaped like a keyhole. Origin Late 19th century; earliest use found in The Eclectic Magazine.
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更新时间：2026/6/9 21:19:15